Arenesulphenyl chlorides (ArSCl; Ar = Ph, C6Cl5, 2,4(NO2)(2) C6H3) are reac
ted with allylcobaloximes, RCo(dmgH)(2)Py (R = allyl). under thermal and ph
otochemical conditions to obtain the corresponding sulphides as the major o
rganic products. alpha -Pinenyl cobaloxime forms the ring opened product as
well. The homolytic as well as heterolytic cleavage of the Co-C bond is co
nsidered.